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Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from £68

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
26 May — 2 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in January or September, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Sky Harbor Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sky Harbor Intl to Seattle
Explore the most affordable flight options available from Sky Harbor Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 April 2026.

Wed 10/617:33
PHX
-
SEA
Nonstop3h 09m
Delta
Wed 24/620:35
SEA
-
PHX
Nonstop3h 01m
Delta
Deal found 22/4£116
Tue 11/814:37
PHX
-
SEA
Nonstop3h 06m
Alaska Airlines
Tue 18/807:17
SEA
-
PHX
Nonstop3h 03m
Alaska Airlines
Deal found 23/4£126
Tue 18/818:15
PHX
-
SEA
Nonstop3h 00m
Southwest
Tue 25/807:10
SEA
-
PHX
Nonstop2h 55m
Southwest
Deal found 23/4£128
Tue 12/506:50
PHX
-
SEA
Nonstop3h 10m
Delta
Sun 17/517:55
SEA
-
PHX
Nonstop2h 58m
Delta
Deal found 22/4£130
Wed 12/815:35
PHX
-
SEA
1 stop4h 40m
Southwest
Tue 18/807:10
SEA
-
PHX
Nonstop2h 55m
Southwest
Deal found 24/4£132
Wed 24/606:55
PHX
-
SEA
Nonstop3h 10m
Delta
Sat 19/920:25
SEA
-
PHX
Nonstop3h 01m
Delta
Deal found 22/4£134
Tue 12/511:00
PHX
-
SEA
1 stop7h 00m
Southwest
Tue 19/506:50
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 22/4£137
Mon 29/618:53
PHX
-
SEA
Nonstop3h 07m
Alaska Airlines
Tue 7/720:50
SEA
-
PHX
Nonstop2h 59m
Alaska Airlines
Deal found 23/4£138
Tue 11/806:02
PHX
-
SEA
Nonstop3h 06m
Alaska Airlines
Mon 24/820:35
SEA
-
PHX
Nonstop3h 03m
Alaska Airlines
Deal found 23/4£140
Wed 13/520:35
PHX
-
SEA
Nonstop3h 00m
Southwest
Sat 23/506:40
SEA
-
PHX
Nonstop2h 45m
Southwest
Deal found 22/4£140

Find flight deals from Sky Harbor Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 26 April 2026.

Round-trip from

£116

One-way from

£68

Popular in

April

Cheapest in

January

Average price

£174

Good one-way deal

£99 or less
Delta
  • Delta
  • 10/6-30/6
  • Nonstop
  • 6h 08m total
  • Phoenix to Seattle
Search Deals
Southwest
  • Southwest
  • 19/8
  • 1 total stop
  • 4h 40m total
  • Phoenix to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sky Harbor Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 April 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 6/6

15:55-19:04

Nonstop3h 09m

Seattle/Tacoma Intl

Sun 7/6

08:14-11:12

Nonstop2h 58m

£116

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Mon 13/7

12:06-15:20

Nonstop3h 14m

Seattle/Tacoma Intl

Tue 21/7

11:45-14:59

Nonstop3h 14m

£116

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Mon 24/8

15:40-18:51

Nonstop3h 11m

Seattle/Tacoma Intl

Thu 3/9

17:40-20:37

Nonstop2h 57m

£153

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 6/6

17:10-21:50

1 stop4h 40m

Seattle/Tacoma Intl

Sat 13/6

15:55-21:35

1 stop5h 40m

£182

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 6/6

17:10-21:50

1 stop4h 40m

Seattle/Tacoma Intl

Sun 7/6

07:40-10:30

Nonstop2h 50m

£187

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 16/5

08:00-13:30

1 stop5h 30m

Seattle/Tacoma Intl

Tue 26/5

09:20-12:10

Nonstop2h 50m

£190

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 13/5

17:35-20:50

Nonstop3h 15m

Seattle/Tacoma Intl

Sat 23/5

17:55-20:53

Nonstop2h 58m

£194

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 14/8

08:45-11:59

Nonstop3h 14m

Seattle/Tacoma Intl

Sun 23/8

20:25-23:26

Nonstop3h 01m

£197

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 8/10

06:00-09:16

Nonstop3h 16m

Seattle/Tacoma Intl

Mon 12/10

17:40-20:34

Nonstop2h 54m

£197

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 4/6

09:40-16:20

1 stop6h 40m

Seattle/Tacoma Intl

Wed 17/6

16:35-23:20

2 stops6h 45m

£202

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from Sky Harbor Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sky Harbor Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Seattle

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £98). Flying from Phoenix Sky Harbor Intl Airport to Seattle in April is currently the most expensive (average of £174). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to SEA?

Find hourly flight availability from Sky Harbor Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 April 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 83% on flights from Phoenix Sky Harbor Intl Airport to Seattle by exploring options for tickets in the morning.

How much does it cost for a return flight from Phoenix Sky Harbor Intl Airport to Seattle?

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 28 inbound flights from Phoenix Sky Harbor Intl per day. 0 airlines have flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Airlines like Delta and Southwest fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h 09m. The time it takes to get you to your destination can typically vary by up to 1h 31m. Phoenix Sky Harbor Intl Airport and Seattle are separated by a distance of 1107 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Seattle?

    Consider KLM (95%), Envoy Air (94%) or Condor (93%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Seattle.

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Seattle?

    While on average a flight from Phoenix Sky Harbor Intl Airport to Seattle is generally £113, our data shows the cheapest flight currently is £99. When looking at the most popular route, (Phoenix Sky Harbor Intl - Seattle/Tacoma Intl), you can expect to pay £116 for that flight.

  • Can I find deals for flights from Sky Harbor Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Seattle.

  • Can I find deals for business class flights from Sky Harbor Intl to Seattle?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £98). Flying from Phoenix Sky Harbor Intl Airport to Seattle in April is currently the most expensive (average of £174). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Can Cheapflights find flights from Sky Harbor Intl to Seattle with no change fees?

Yes, we can. To see specific flights from Sky Harbor Intl to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Sky Harbor Intl to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Sky Harbor Intl today and book when prices fit your budget.

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